Timeliness Vaccination of Measles Containing Vaccine and Barriers to Vaccination among Migrant Children in East China

Background

The reported coverage rates of first and second doses of measles containing vaccine (MCV) are almost 95% in China, while measles cases are constantly being reported. This study evaluated the vaccine coverage, timeliness, and barriers to immunization of MCV₁ and MCV₂ in children aged from 8–48 months.

Methods

We assessed 718 children aged 8–48 months, of which 499 children aged 18–48 months in September 2011. Face to face interviews were administered with children’s mothers to estimate MCV₁ and MCV₂ coverage rate, its timeliness and barriers to vaccine uptake.

Results

The coverage rates were 76.9% for MCV₁ and 44.7% for MCV₂ in average. Only 47.5% of surveyed children received the MCV₁ timely, which postpone vaccination by up to one month beyond the stipulated age of 8 months. Even if coverage thus improves with time, postponed vaccination adds to the pool of unprotected children in the population. Being unaware of the necessity for vaccination and its schedule, misunderstanding of side-effect of vaccine, and child being sick during the recommended vaccination period were significant preventive factors for both MCV₁ and MCV₂ vaccination. Having multiple children, mother’s education level, household income and children with working mothers were significantly associated with delayed or missing MCV₁ immunization.

Conclusions

To avoid future outbreaks, it is crucial to attain high coverage levels by timely vaccination, thus, accurate information should be delivered and a systematic approach should be targeted to high-risk groups.